Senior Security Engineer

Are you an Active Directory specialist with a security mentality? We are looking for a senior support specialist with a high level of attention to detail to work within a team, who are responsible for maintaining users and group accounts within Active Directory (AD) to ensure optimal performance, security, and access control within our organisation's network through industry standard controls and tooling. You should be experienced in creating and running PowerShell scripts, delegation of control, group policy and troubleshooting complex issues within a multi forest environment.

Team responsibilities

The team proactively prevents and resolves all issues relating to accounts and groups used to assign access throughout the organisation.  They act as gatekeepers to the AD estate and its privileged accounts and groups ensuring that all controls are in place . We are looking for someone with a broad skillset including solutions design, problem solving and resolution, PowerShell scripting, and documentation writing skills.  You should be an excellent communicator and can deal with all levels of seniority, with a background in Security.

What are we looking for?

• Good communicator
• Familiar with Service Now and the change management processes
• Very good Active Directory Knowledge (7 years minimum) in an Enterprise environment – Hierarchy / management group design, deployment, configuration and BAU support.
• Experience with all aspects of AD user and group Management
• Must be excellent at liaising with Service line owners and customers
• Experience of working in an Enterprise environment with strong change control practices
• A strong understanding of Windows Server Technologies e.g. Service accounts and policies restricting their use through Group membership and GPO
• Excellent investigation and troubleshooting skills of complex issues and ability to locate application owners and liaise effectively with them.
• Motivated self-starter who can work independently as well as part of a team.
• High level of accuracy and attention to detail.
• Able to take direction from others when needed and not afraid to ask for help.
• Ability to learn new concepts and products with ease.
• Ability to think quickly and decisively and look for alternative solutions in challenging situations.
• Ability to produce clear and accurate technical documentation and train/hand-off design and implementation work.
• Ability to work under pressure to meet challenging deadlines.
• Ability to report in a formal and structured method.

Diversity & Inclusion

People are at the heart of what we do and drive the success of our business. Our colleagues thrive personally and professionally through our shared values of Integrity, Partnership, Innovation and Excellence are at the core of our culture. We embrace diversity and actively seek to attract people with unique backgrounds and perspectives. We are always looking at ways to become more agile, so we meet the needs of our

Proud to share LSEG in the India is Great Place to Work certified (Jun '25 – Jun '26).

Learn more about life and purpose of our company directly from India colleagues' video: Bengaluru, India | Where We Work | LSEG

Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we'd love to hear from you.

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone's race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs.

You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

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